Actinopteri (ray-finned fishes) > Characiformes
(Characins) > Distichodontidae
Etymology: Nannocharax: Latin, nannus = small + Greek, charax = a marine fish without identification (Ref. 45335). More on author: Boulenger.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; pelagic; pH range: 6.5 - 7.5; dH range: ? - 15; depth range - m (Ref. ), usually - m (Ref. ). Tropical; 22°C - 26°C (Ref. 13614); 11°S - 21°S
Africa: Cunene, Okavango, upper Zambezi, Kafue (middle Zambezi) and in the Zambian Congo River system (Ref. 52193), including Lakes Bangweulu and Mweru.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 6.0 cm TL male/unsexed; (Ref. 7094)
Morphology | Morphometrics
Prefers vegetated margins of rivers and oxbow lagoons or shallow lakes; picks small invertebrates and epiphyton from stems of plants and roots; breeds in summer (Ref. 7248, 52193). Known to make seasonal movements onto floodplains during rainy season (Ref. 13337). Maximum size about 45mm SL; attractive and peaceful aquarium species (Ref. 52193).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Daget, J. and J.-P. Gosse, 1984. Distichodontidae. p. 184-211. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ORSTOM, Paris and MRAC, Tervuren. Vol. 1. (Ref. 7094)
IUCN Red List Status (Ref. 124695)
Threat to humans
Fisheries: of no interest; aquarium: commercial
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref. 93245
Trophic level (Ref. 69278
): 2.8 ±0.25 se; based on food items.
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .